Hi,

> Why are the elements in the arrays not numbers?  It looks like you
> rather
> want to work with numbers (Fixnum) here.

It's not only numbers. In some cases there are strings.


> Can you show us what's in data?  Please make sure to present complete
> examples, otherwise it's difficult to come up with answers - and to
> follow
> the discussion as well.

ok sorry...
my code to read out the tablewidget and create the array.

    array = Array.new

    for i in 0..rowCount - 1
      tmp = Array.new
      tmp << @tableWidget.item(i, 1).text.to_a
      tmp << @tableWidget.item(i, 0).text.to_a
      tmp = tmp[0] + tmp[1]

      array << tmp
    end

    array.group_by {|s,i| s}
    array= array.group_by {|s,i| s}.each {|k,v| v.map! {|s,i| i}}

The 2d array looks like this after grouping

{"I OFF"=>["a8", "1e"], "E OFF"=>["98", "a0"], "Emphasized ON"=>["db"], 
"I ON"=>["99"]}

It seems like after using grouping by it is not an array anymore. I use 
array[0] and get a nil. How can I take only the values. I would like to 
combine all combinations only I with E and E with I. It is not working.

> irb(main):001:0> h = {"I OFF"=>["34"], "E OFF"=>["92", "94"], "E
> ON"=>["7f"], "I ON"=>["d9", "cf"]}
> => {"I OFF"=>["34"], "E OFF"=>["92", "94"], "E ON"=>["7f"], "I
> ON"=>["d9",
> "cf"]}
> irb(main):002:0> h.select {|k,| /^I/ =~ k}
> => {"I OFF"=>["34"], "I ON"=>["d9", "cf"]}
> irb(main):003:0> h.select {|k,| /^E/ =~ k}
> => {"E OFF"=>["92", "94"], "E ON"=>["7f"]}

I have to try it now :D. Thanks

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